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US 11,238,259 B2Granted
Fingerprint module and preparation method thereof, and electronic device and preparation method thereof
AssigneeShenzhen Goodix Technology Co., Ltd.
InventorsJun Cai, Wei Ling
Life of this patent
Estimating the term…
Abstract
A fingerprint module and the preparation method thereof, and an electronic device and the preparation method thereof, which are beneficial to improving the performance of fingerprint identification. The fingerprint module includes a fingerprint sensor, wherein a first direction of the fingerprint module has a first angle with a first direction of the fingerprint sensor, the first direction of the fingerprint module is a direction parallel to a particular edge of the fingerprint module, and the first direction of the fingerprint sensor is a direction parallel to a particular edge of the fingerprint sensor.
Claims16
An optical fingerprint apparatus, applicable to an electronic device having a display screen, the optical fingerprint apparatus comprising:
- a fingerprint sensor comprising a sensing array with a plurality of optical sensing units, wherein the optical sensing units are configured to receive light that is generated when a finger above the display screen is illuminated, and to convert the light into fingerprint detection signals so as to obtain a fingerprint image of the finger;
- wherein the fingerprint sensor being structured to be arranged under the display screen in such a manner that the sensing array is distributed along an axis parallel to a first direction of the fingerprint sensor having a predetermined angle relative to a specific direction of the display screen, wherein the specific direction refers to a direction parallel to a particular edge of the display screen, the first direction is parallel to a particular edge of the fingerprint sensor, and the predetermined angle is about 15 degrees;
- wherein the optical fingerprint apparatus further comprises a bracket and a flexible printed circuit, wherein the bracket is arranged on the flexible printed circuit to form an accommodating space, and the fingerprint sensor is mounted on the flexible printed circuit and received in the accommodating space;
- wherein the optical fingerprint apparatus further comprises a foam, wherein the bracket is attached to a lower surface of a middle frame of the electronic device, the middle frame is arranged between the display screen and a back cover of the electronic device, and is used for carrying components in the electronic device;
- and
- wherein the middle frame is formed with an opening in an installation area of the optical fingerprint apparatus, and the bracket is arranged under the opening and attached to the lower surface of the middle frame, so that there is a gap between the optical fingerprint apparatus and the display screen.
3 more elements
An electronic device for implement under display fingerprint detection, comprising:
- a display screen comprising a plurality of display pixel units arranged along a first axis parallel to a particular edge of the display screen;
- and
- an optical fingerprint apparatus arranged under the display screen, the optical fingerprint apparatus comprising a fingerprint sensor having a sensing array, the sensing array comprising a plurality of optical sensing units distributed along a second axis parallel to a first direction of the fingerprint sensor having a predetermined angle relative to the first axis of the display screen, the first direction of the fingerprint sensor is parallel to a particular edge of the fingerprint sensor, and the predetermined angle is about 15 degrees;
- wherein the optical sensing units are configured to receive light that is generated when a finger above the display screen is illuminated by part of the display pixel units, and to convert the light into fingerprint detection signals so as to obtain a fingerprint image of the finger;
- wherein the fingerprint sensor is a rectangle fingerprint sensor, the sensing array is distributed along an axis that is parallel to a long edge of the rectangle fingerprint sensor, and the display screen is arranged to have a short edge parallel to a ground plane when the electronic device is placed vertically, wherein the long edge of the rectangle fingerprint sensor have the predetermined angle in relative to the short edge of the display screen;
- wherein the predetermined angle is adapted to reduce Moire stripes in the fingerprint image and influence of a polarizer in the display screen on the light received by the fingerprint sensor;
- and
- wherein the predetermined angle is determined according to a polarization direction of the polarizer in the display screen and the long edge of the rectangle fingerprint sensor have an angle of 30 degrees relative to the direction of parallel to the polarization direction of the polarizer.
5 more elements
An optical fingerprint apparatus, applicable to an electronic device having a display screen, the optical fingerprint apparatus comprising:
- a fingerprint sensor comprising a sensing array with a plurality of optical sensing units, wherein the optical sensing units are configured to receive light that is generated when a finger above the display screen is illuminated, and to convert the light into fingerprint detection signals so as to obtain a fingerprint image of the finger;
- wherein the fingerprint sensor being structured to be arranged under the display screen in such a manner that the sensing array is distributed along an axis parallel to a first direction of the fingerprint sensor having a predetermined angle relative to a specific direction of the display screen, wherein the specific direction refers to a direction parallel to a particular edge of the display screen, the first direction is parallel to a particular edge of the fingerprint sensor, and the predetermined angle is about 15 degrees;
- wherein the fingerprint sensor is a rectangle fingerprint sensor, the sensing array is distributed along an axis that is parallel to a long edge of the rectangle fingerprint sensor, and the display screen is arranged to have a short edge parallel to a ground plane when the electronic device is placed vertically, wherein the long edge of the rectangle fingerprint sensor have the predetermined angle relative to the short edge of the display screen;
- and
- wherein the predetermined angle is determined according to a polarization direction of the polarizer in the display screen, and the predetermined angle is adapted to reduce Moire stripes in the fingerprint image and influence of a polarizer in the display screen on the light received by the fingerprint sensor.
2 more elements
Dependencies are inferred from the claim text.